Improvement in gang-plow beams



'J.W.SURSA.

Plow Beam. No. 107,560. Patented Sept 20, 1870.

5 PIER nfinite-I M12695 33mm can.

Letters Patent N 107,560, dated Septembm' 20, 1870.

mpnovmvmm m GANG-PLOW BEAMS.

The Schedule referred to in these Letters Patent: and making part of the same.

To all whom it may concern I Be it known that I, JAMES W. Sousa, of San Francisco, in the county of San Francisco and State of California, have invented a new and useful Improvement in llow-bcams; and I do hereby declare that the tbllowing is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing forming part of this specification.

This invention relates to a new and useful improvement in beams for plows, more especially designed for gang-plows, but applicable to other kinds ot'plows; and consists in making the beam or beams of angleiron, as hereinafter more fully described.

In the accompanying drawing- Figure 1 represents a perspective view of the beams designed for a gang-plow.

Figure 2 is a cross-section on the. line .1"

Similar lottersot' reference indicate corresponding parts.

A is the tongue to which the beam is attached.

B is the long beam, which is curved, at its forward part, so as to reach onto and be fastened to the tongue. The rear portion of the tongue is square, and the forard portion of the beam fits onto the. upper lefthand angle.

0 is the short orrigbt-hand beam, which is straight, the forward portion fitting the upperright-hand angle of the tongue, as seen in the drawing.

These beams are securely fastened to the tongue by bolts, and are connected together, at their rear ends, by means-0t one or more diagonal braces, D, as represented.

E is a strap, which is securely bolted to the rear end of the tongue, with its ends bent down over and below both beams, as plainly seen in fig. 2.

I? is a bolt, .which passes through the ends of the strap, and connects the hinge of my plow, and, also, thelover and spring G.

The plows prop are attached to the beams in the ordinary manner.

It represents vertical holes, three, more or less, by which the plows are adjusted to or from the land.

By making a gang-plow in this manner, both lightness andstreugth are secured, as it is well known that a given weight of iron, in the form of angleiron, will resist lateral and vertical pressure or strain with greater force that when in any other form. When the beams of a gang-plow are formed of this iron, and securely tied together and braced, and bolted to the tongue, as shown in the drawing, little is leftto be desired as regards strength, lightness, and durability Having thus described my invention I claim as new and desire to secure by Letters Patent- 1. The long beam B, short beam 0, and brace D, combined with the tongue A, as and for the purpose described.

2. The arrangement of angular brace D, and angleclip E 11, and for the purpose described.

J. \V. SURSA Witnesses SAML. S. MURFEY, G. T. Vmcnx'r. 

